Reproductive success and habitat characteristics of Golden-winged Warblers in high-elevation pasturelands

Aldinger, Kyle R.; Wood, Petra Bohall

doi:10.1676/13-114.1

Cited by 19 publications

(31 citation statements)

References 23 publications

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“…The other two vegetation covariates associated with DSR, Rubus cover and distance to forest edge, also are important features of Golden-winged Warbler nest sites (e.g., Buehler et al 2007, Confer et al 2011, Aldinger and Wood 2014. Similar to grass cover, models with a state by Rubus cover or state by distance to forest edge interaction had little support, so management targets may be similar across the Golden-winged Warbler's breeding range.…”

Section: Discussionmentioning

confidence: 99%

“…We recognize, however, that variation in DSR among our states may be attributable to additional characteristics that we did not measure. As such, it is important to consider our results along with contextspecific studies (e.g., Confer et al 2010, Bulluck et al 2013, Aldinger and Wood 2014 and management plans (e.g., Bakermans et al 2011;Golden-winged Warbler Working Group 2013a, 2013b) during conservation planning. For example, a key consideration for land managers around our Minnesota and New York sites would be reproductive performance in wetland versus upland settings (Confer et al 2010.…”

Section: Discussionmentioning

confidence: 99%

“…Their status has resulted in increased attention from conservation agencies and highlighted the importance of creating and managing vegetation communities used for breeding (Ciuzio et al 2013). Several site-specific studies related Golden-winged Warbler nest survival to habitat characteristics at various scales, including nest sites (Bulluck and Buehler 2008, Aldinger and Wood 2014, Streby et al 2014, territories (Confer et al 2003), clusters of territories (Kubel and Yahner 2008, Confer et al 2010, Roth et al 2014, and study sites (Bulluck et al 2013), and were seldom in agreement about which characteristics were linked to nest survival. A cohesive assessment of DSR that includes multiple states across the breeding range and the various vegetation communities used for nesting may unify disparate findings.…”

Section: Introductionmentioning

confidence: 99%

“…Vegetation characteristics. We used percent cover of forb, grass, herbaceous (forb + grass), Rubus, woody, and shrub (Rubus + woody) within 1 m of the nest (hereafter referred to as forb, grass, herbaceous, Rubus, woody, or shrub cover), vegetation density within 10 m of the nest (hereafter referred to as vegetation density), distance to later successional forest edge (hereafter referred to as forest edge), and nest height as covariates in DSR models because these characteristics were associated with nest survival in previous studies (Confer et al 2003, Bulluck and Buehler 2008, Roth et al 2012, Bulluck et al 2013, Aldinger and Wood 2014, Streby et al 2014. We predicted that preferred levels of vegetation characteristics selected by individual warblers (approximately 5-45% forb, 5-45% grass, 40-80% herbaceous, 5-40% Rubus, 15-35% woody, and 5-50% shrub cover and 10-30% vegetation density; Roth et al 2012, Terhune et al 2015 would be associated with increased DSR.…”

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confidence: 99%

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Variables associated with nest survival of Golden-winged Warblers (Vermivora chrysoptera) among vegetation communities commonly used for nesting

Aldinger¹,

Terhune²,

Wood³

et al. 2015

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ABSTRACT. Among shrubland-and young forest-nesting bird species in North America, Golden-winged Warblers (Vermivora chrysoptera) are one of the most rapidly declining partly because of limited nesting habitat. Creation and management of high quality vegetation communities used for nesting are needed to reduce declines. Thus, we examined whether common characteristics could be managed across much of the Golden-winged Warbler's breeding range to increase daily survival rate (DSR) of nests. We monitored 388 nests on 62 sites throughout Minnesota, Wisconsin, New York, North Carolina, Pennsylvania, Tennessee, and West Virginia. We evaluated competing DSR models in spatial-temporal (dominant vegetation type, population segment, state, and year), intraseasonal (nest stage and time-within-season), and vegetation model suites. The best-supported DSR models among the three model suites suggested potential associations between daily survival rate of nests and state, time-within-season, percent grass and Rubus cover within 1 m of the nest, and distance to later successional forest edge. Overall, grass cover (negative association with DSR above 50%) and Rubus cover (DSR lowest at about 30%) within 1 m of the nest and distance to later successional forest edge (negative association with DSR) may represent common management targets across our states for increasing Golden-winged Warbler DSR, particularly in the Appalachian Mountains population segment. Context-specific adjustments to management strategies, such as in wetlands or areas of overlap with Blue-winged Warblers (Vermivora cyanoptera), may be necessary to increase DSR for Golden-winged Warblers. Variables associées à la survie des nids de Paruline à ailes dorées (Vermivora chrysoptera) parmi les communautés végétales fréquemment utilisées pour nicherRÉSUMÉ. Parmi les espèces d'oiseaux d'Amérique du Nord qui nichent dans les milieux arbustifs et les jeunes forêts, la Paruline à ailes dorées (Vermivora chrysoptera) est l'une de celles dont les populations diminuent le plus rapidement en raison du peu de milieux de nidification. Afin de freiner cette baisse, la création et l'aménagement de communautés végétales de qualité sont nécessaires pour la nidification de l'espèce. Nous avons examiné s'il était possible d'aménager sur la base de caractéristiques communes dans une grande partie de l'aire de reproduction de cette paruline pour augmenter le taux de survie quotidien des nids (TSQ). Nous avons suivi 388 nids dans 62 stations réparties au Minnesota, au Wisconsin, dans l'État de New York, en Caroline du Nord, en Pennsylvanie, au Tennessee et en Virginie occidentale. Nous avons évalué trois séries de modèles de TSQ fondés sur les caractéristiques spatio-temporelles (type de végétation dominante, segment de la population, État et année), intrasaisonnières (stade du nid et moment durant la saison) et végétales. Parmi tous les modèles, les meilleurs montraient une association potentielle du taux de survie quotidien des nids avec l'État, le moment durant la saison, le pourcent...

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Variables associated with nest survival of Golden-winged Warblers (Vermivora chrysoptera) among vegetation communities commonly used for nesting

Aldinger¹,

Terhune²,

Wood³

et al. 2015

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“…We predicted that warbler abundance would have a quadratic relationship to time since harvest Buehler 2001, Bulluck andBuehler 2008). Furthermore, we expected that warbler abundance would be positively related to herbaceous cover (Klaus and Buehler 2001, Confer et al 2003, Bulluck and Buehler 2008, Aldinger 2010, sapling density Lutz 2004, Martin et al 2007), and shrub cover (Confer et al 2003, Martin et al 2007, Aldinger and Wood 2014 but negatively related to distance to a microedge, i.e., patchy conditions (Rossell et al 2003, Buehler et al 2007). We predicted a positive or quadratic response between warbler numbers and residual basal area (Rossell 2001, Roth et al 2014).…”

Section: Analysesmentioning

confidence: 94%

Stand and within-stand factors influencing Golden-winged Warbler use of regenerating stands in the central Appalachian Mountains

Bakermans¹,

Smith²,

Jones³

et al. 2015

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ABSTRACT. The Golden-winged Warbler (Vermivora chrysoptera) is currently being considered for protected status under the U.S. Endangered Species Act. The creation of breeding habitat in the Appalachian Mountains is considered a conservation priority for this songbird, which is dependent on extensively forested landscapes with adequate availability of young forest. We modeled abundance of Golden-winged Warbler males in regenerating harvested forest stands that were 0-17 years postharvest at both mid-Appalachian and northeast Pennsylvania regional scales using stand and within-stand characteristics of 222 regenerating stands, 2010-2011. Variables that were most influential at the mid-Appalachian scale were different than those in the northeast region. Across the mid-Appalachian ecoregion, the proportion of young forest cover, i.e., shrub/scrub cover, within 1 km of regenerating stands best explained abundance of Golden-winged Warblers. Golden-winged Warbler response was best explained by a concave quadratic relationship in which abundance was highest with 5-15% land in young forest cover. We also found evidence that the amount of herbaceous cover, i.e., the amount of grasses and forbs, within a regenerating stand positively influenced abundance of Golden-winged Warblers. In northeastern Pennsylvania, where young forest cover is found in high proportions, the distance to the nearest regenerating stand best explained variation in abundance of Golden-winged Warblers. Abundance of Golden-winged Warblers was <1 male per survey when another regenerating stand was >1500 m away. When modeling within-stand features in the northeast region, many of the models were closely ranked, indicating that multiple variables likely explained Golden-winged Warbler response to within-stand conditions. Based on our findings, we have proposed several management guidelines for land managers interested in creating breeding habitat for Golden-winged Warblers using commercial timber operations. For example, we recommend when managing for Golden-winged Warblers in the central Appalachian Mountains that managers should strive for 15% young forest in a heavily forested landscape (>70% forest cover) and cluster stands within 1-2 km of other young forest habitats.Caractéristiques de peuplements et intra-peuplements ayant une influence sur l'utilisation de peuplements en régénération par la Paruline à ailes dorées dans le secteur centre des Appalaches RÉSUMÉ. La Paruline à ailes dorées (Vermivora chrysoptera) est présentement sur la liste des espèces candidates pour l'obtention d'un statut de protection en vertu de la Endangered Species Act (loi sur les espèces en péril) aux États-Unis. La création de milieux de nidification dans les Appalaches est vue comme une priorité de conservation pour ce passereau, qui dépend de vastes paysages boisés pourvus de jeunes forêts adéquates. Nous avons modélisé l'abondance de Parulines à ailes dorées mâles dans des peuplements forestiers en régénération après récolte, âgés de 0 à 17 ans, à l'échelle régionale des...

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Genotype‐environment associations support a mosaic hybrid zone between two tidal marsh birds

Walsh

Rowe

Olsen

et al. 2015

Ecology and Evolution

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Local environmental features can shape hybrid zone dynamics when hybrids are bounded by ecotones or when patchily distributed habitat types lead to a corresponding mosaic of genotypes. We investigated the role of marsh‐level characteristics in shaping a hybrid zone between two recently diverged avian taxa – Saltmarsh (Ammodramus caudacutus) and Nelson's (A. nelsoni) sparrows. These species occupy different niches where allopatric, with caudacutus restricted to coastal marshes and nelsoni found in a broader array of wetland and grassland habitats and co‐occur in tidal marshes in sympatry. We determined the influence of habitat types on the distribution of pure and hybrid sparrows and assessed the degree of overlap in the ecological niche of each taxon. To do this, we sampled and genotyped 305 sparrows from 34 marshes across the hybrid zone and from adjacent regions. We used linear regression to test for associations between marsh characteristics and the distribution of pure and admixed sparrows. We found a positive correlation between genotype and environmental variables with a patchy distribution of genotypes and habitats across the hybrid zone. Ecological niche models suggest that the hybrid niche was more similar to that of A. nelsoni and habitat suitability was influenced strongly by distance from coastline. Our results support a mosaic model of hybrid zone maintenance, suggesting a role for local environmental features in shaping the distribution and frequency of pure species and hybrids across space.

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Reproductive success and habitat characteristics of Golden-winged Warblers in high-elevation pasturelands

Cited by 19 publications

References 23 publications

Variables associated with nest survival of Golden-winged Warblers (Vermivora chrysoptera) among vegetation communities commonly used for nesting

Variables associated with nest survival of Golden-winged Warblers (Vermivora chrysoptera) among vegetation communities commonly used for nesting

Stand and within-stand factors influencing Golden-winged Warbler use of regenerating stands in the central Appalachian Mountains

Genotype‐environment associations support a mosaic hybrid zone between two tidal marsh birds

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